I do mostly city driving, with occasional several hundred mile long highway road trips, change about every 6 months, which is around 5000 miles. Using various synthetic oils.

 

Synthetic doesn't have any major advantages but make sure filter can last that long alot of people when I worked at Toyota people would change filter every 5k but oil every 10k while using synthetic

 

how do you change the filter without all the oil draining out?

 

take off filter, put new one on, run car, top off oil. The oil filter being taken off won't drain all the oil.

 

Is this how often do you intend to change the oil, or how often do you end up changing the oil?

 

i buy the stuff at 3k and by the time i get around to it its usually 4 or 5k

 

i start thinking about it around 5000. then its kinda whenever i have some free time on a weekend. (i chose 7500)

 

Whenever i'm not feeling lazy.
After a hangover.
Whenever the parents come to visit me.

 

i do 3,000 no matter what, even with full synthetic

 

Personally I do 5000 with synthetic. Yes Hyundai recommends 7500 IF you're not in "extreme conditions" which includes frequent short trips, up/down hills/mountains, places where they use salt on the roads, very cold temperatures etc. The manual lists them all, but I think most people fall under at least some of those extreme conditions, in which case the interval shortens to 3000 miles. So, I figure 5000 on synthetic is safe if 3000 on petroleum is recommended.

For any possible warranty issues make sure you follow the manual.

 

3000 with full synthetic i beat the crap outa my car so if it helps keep it running its worth the extra cash

 

There are so many possibilities and combinations that a generic decision for everybody can only be made on the safe side. That is 3k miles or 6 months. For me, I used Full Syn 5w20. It's not dusty here but I drive for a 1/2 mile in the cold morning and 1/2 mile in the cool evening. It never gets hot here. So I got a thin, quick warming oil. I change my about ever 6-9 Months even though I put good miles on the car during trips and races, the air and roads are pretty clean so not much dirt or dust. Everyone just has to factor in their own environment. Since most cant do it correctly then the easy thing is safer and makes and saves (warranty) the companies more money. I always felt it was kind of a racket.

 

With the knowledge from working at Jiffylube, I recommend a change every 3000 to 4000 with conventional, about 4000 with synthetic blend and 5000 with full synthetic. My personal favorite is Penzoil 5w30 high milage synthetic blend for my car.

Edit: if your driving 7500 miles with conventional oil, your an idiot. Your engine is going to build sludge very fast

 

we had a training course with BG. They had an oil specialist come in and said that with the exception of some special rated synthetic oils ( I dont remember what the rating was)...the additive pack that is installed in the oil is broken down around the 3500 mile mark. after that you get wear and tear.

 

the interval depends on how you drive and what your car is used for...and debatable about the brand and synthetic/non-synthetic...

 

I use the Pennzoil Ultra 5W-30 and I change oil and filter every 5,000 miles or after 6 months, whichever comes up sooner. The difference in smoothness after switching over to the Pennzoil Ultra (from Mobil 1 0W-30) was non-existent for daily commuting but I felt a difference when revving high and hard up in the mountains.

 

ultra works wonders. Come to jiffylube and our baseline package for it is $99.98 lol

 

Ive been changing my synthetic at 3k, sure makes me think a little if I can stretch it a little longer...maybe I can.

 

change about it once in April and once in September. I do alot of short driving with random long trips during the summer. But during the school year my car sits 4 days a week without being driven. So I never really do a mileage point.

 

i use a custom oil a shop at my house makes themselves, only change it at 5k. he recently took it to korea and sold it to them, made a freaking **** ton off of it too.

 

Castrol Synthetic 5w30 every 3000 miles along with a new K&N filter. Pennsylvania manages to place some extreme conditions on vehicles like 100 degrees in the summer to 0 and below temps in the winter, lots of stop and go city driving, dirty roads, etc. No sludge build-up in this Tiburon. Sort of a "peace of mind' situation knowing that your motor is going to last longer and parts will wear better.

 

I used to change it about every 3000 when I using conventional oil. Now I use a synthetic blend and change it every 4000-5000. This is with 95% highway driving.

 

Still looking for data regarding filter life change - cant find anything on K&N's site.

 

change the filter when you change the oil

 

sounds like a messy pain in the *** to just change the filter.

 

i used royal purple and a k&n oil filter and changed every 6k

 

I use Royal Purple with OEM Hyundai filter, I change the oil every 6k and every 3k I change the filter

 

Been changing every 3k, last fill was Mobil1 5w30 with a Royal Purple Filter but I just got a stock of OEM filters and some Penzoil Ultra 5w30 for my change this weekend or next. Used to do 4.5k on my old RD Tib but just kind of fell into doing 3k on this one

 

YOU ARE WASTING OIL AND MONEY! synthetic on dependin on how you drive can last up to around 12k but 7-8k is good,just the filters usually only go to 10k